WordPress displays Posts and Custom Posts order by you published them. Sometime change the order by ascending or descending is not the perfect solution always.
If you want to change the order as your choice then you can use this plugin Post Type Order
Download and activate the plugin. Then at the settings page select all the Custom post types and posts there you want to implement Drag & Drop ordering system.
Now go to any of your custom posts and you will see all the posts order can change by simple Drag & Drop system.